Chain shackle with pin locking structure



FIG. 1 is a perspective view of a chain shackle with pin locking structure embodying my new design;

FIG. 2 is a rear view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a left side elevational view thereof; and,

FIG. 7 is a front view thereof.

The broken line showing in the Figures are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a chain shackle with pin locking structure, as shown and described. 